CeRhIn5 is an antiferromagnetic itinerant magnet which illustrates a temperature and pressure interplay between antiferromagnetism and superconductivity. Recently, it has been demonstrated that this system displays both well defined spin-wave excitations yet also a decay of these indicating a breakdown of a single quasiparticle description of this system. We propose a muon study to investigate the low-energy magnetic fluctuations to investigate the response to superconductivity, which is currently controversial and also to search for slow magnetic fluctuations associated with the neutron data taken on the THz timescale.